﻿<p>The <em>IfcStyledItem</em> holds presentation style information for products, either explicitly for an <em>IfcGeometricRepresentationItem</em> being part of an <em>IfcShapeRepresentation</em> assigned to a product, or by assigning presentation information to <em>IfcMaterial</em> being assigned as other representation for a product.</p>
<ul>
<li>If the <em>IfcStyledItem</em> is used within a reference from an <em>IfcProductDefinitionShape</em> then one <em>Item</em> shall be provided.</li>
<li>If the <em>IfcStyledItem</em> is used within a reference from an <em>IfcMaterialDefinitionRepresentation</em> then no <em>Item</em> shall be provided.</li>
</ul>

<blockquote class="extDef">NOTE&nbsp; Definition according to ISO/CD 10303-46:1992<br>
The styled item is an assignment of style for presentation to a geometric representation item as it is used in a representation.</blockquote>
<blockquote class="note"> 
NOTE&nbsp; Entity adapted from <strong>styled_item</strong> defined in ISO10303-46.
</blockquote>

<blockquote class="history">
HISTORY &nbsp;New entity in IFC2x2.
</blockquote>

<blockquote class="change-ifc2x2">
IFC2x2 Addendum 1 CHANGE&nbsp; The entity <em>IfcStyledItem</em> has been made non abstract and the attribute <em>Name</em> added.
</blockquote>

<blockquote class="change-ifc2x3">
IFC2x3 CHANGE The attribute <em>Item</em> has been made optional, upward compatibility for file
based exchange is guaranteed.
</blockquote>

<blockquote class="change-ifc2x4">
IFC4 CHANGE The subtype <em>IfcAnnotationOccurrence</em> and its subtypes are deleted. Use <em>IfcStyledItem</em> for all instantiations. The data type of <em>Styles</em> has been changed to <em>IfcStyleAssignmentSelect</em>
</blockquote>

<p class="use-head">Use Definition</p>

<p>Figure 2 illustrates use of <em>IfcStyledItem</em> for the two usage examples:</p>
<ul>
<li><small>As a presentation for a geometric representation item</small></li>
<li><small>As a presentation for a material definition</small></li>
</ul>
<blockquote class="note">NOTE&nbsp; The new <em>IfcStyleAssignmentSelect</em> allows the direct assignment styles, such as <em>IfcCurveStyle</em>, <em>IfcSurfaceStyle</em> without using the intermediate <em>IfcPresentationStyleAssignment</em></blockquote>

<table summary="use diagram">
<tr><td><img src="../../../figures/ifcstyleditem_fig-1.png" alt="2x4 example" border="0"></td></tr>
<tr><td><p class="figure">Figure 2 &mdash; Styled item</p></td></tr>
</table>